Pump



C. B. WADE Nov. 28, 1950 PUMP 3 Sheets-Sheet 1 Filed April 22, 1.946

INVENTOR.

NOV. 28, 1950 c, WADE 2,531,997

PUMP

Filed April 22, 1946 3 Sheets-Sheet 2 IN V EN TOR.

Patented Nov. 28, 1950 UNITED STATES PATENT OFFICE PUMP Clarence B. Wade, Ma'lad City, Idaho Application April 22, 1946, Serial No. 664,020

3 Claims.

This present invention relates to a pump adapted to be used in wells and is an improvement over the pump structure described, illustrated and claimed in applicants prior U. S. Patent 2,037,607 granted April 14, 1936.

One of the objects of this invention is the provision of a rubber gasket including a flangelike band which seals the upper end of the cylinder housing the impeller.

Another object of the invention is the provision of a sleeve surrounding the impeller shaft in two parts the upper part of which is stationary while the lower part is held to the shaft by a key. This feature of the improvement includes a spring device which forces the lower part of the sleeve against the upper part, thereby sealing ofi sand and water that come up along the shaft.

Another object of the invention is the differentiation of the bearing functions. This differentiation is carried out by providing a single ball bearing carrying the weight of the impeller and shaft and a double ball bearing to balance the effect of the side push, caused by the belt on the pulley.

With these objects and other objects which will appear as the description proceeds, in view,

the invention resides in the novel combination and arrangement of parts referred to in the description and claimed in the appended claims.

The more specific objects and advantages will become more apparent from a consideration of the description read in connection with the accompanying drawings illustrating an operative embodiment.

In the drawings:

Figure 1 is a side view of the pump embodying my invention, the lower portion being broken away;

Figure 2 is an enlarged longitudinal, vertical diametrical section on line 22 of Figure 1;

Figure 3 is an enlarged like section on line 33 of Figure 1;

Figures 4 and 5 are transverse, horizontal sections on lines l--fi and 5-5 respectively of Figure 3;

Figure 6 is an enlarged detail side view of the intermediate portion of the impeller shaft and coupling surrounding the latter;

Figure '7 is a detail side view of the bearing in which the upper end of the shaft revolves;

Figure 8 is a detail view of the portion of the impeller shaft above the impeller chamber and the sleeves surrounding the shaft.

In the drawings in which like reference characters designate like or similar elements, numeral 2 indicates a vertically disposed well casing the lower portion of which encloses in fitting relation a cylinder 3. The bottom of the cylinder is formed by a plate 4 of an area equal to the cross-section of the cylinder and provided with an upstanding cylindrical flange 5 which fflts into a peripheral groove in the outer side of the lower portion of the 'cylinder'and is secured '2 to the latter by fastening screws 6. The cylinder is supported in the casing above the bottom end thereof by legs 1 extending downward from the cylinder and legs 8 depending from the lower side of the plate and attached by fastening means 9 to the first named legs.

The cylinder has an eccentric pumping chamber I6 into which the liquid to be pumped may enter through an upwardly converging opening H located eccentrically in the plate and concentrically with respect to the chamber. The latter is provided with a tangential outlet conduit [2 which is bounded by the inner surface portion of the cylinder not bounding the eccentric chamber and the outer convex surface of a- Wall I3 the inner concave surface of which bounds the chamber (Figure 5). The bottom of this outlet conduit is upwardly inclined so that the liquid forced through it rises to and above the top end of the cylinder. A rubber gasket I4 consists of an annular portion which is retained by a split expansion ring it in the top portion -!6 of the cylinder 3, and an annular outwardly offset portion engaging the inner surface .of the well casing and which is outwardly beveled at its upper edge H. The portion of the cylinder outside the chamber i0 (Figures 3, 4, '5) and forming the upper end of the outlet I2 is open to form a discharge port for the liquid after flowin up the inclined bottom of the outlet conduit l2 so that it can emerge and rise under pressure from the chamber H3.

.A vertically disposed shaft I8 extending to the very top of the structure (Figures 1, 2, 3) has a lower end portion extending through a concentric opening in the top portion I6 of the cylinder and terminating short of the bottom thereof (Figure 2a). The cylindrical and bottom surface of the shaft within the chamber is surrounded by and secured to a socket-like sleeve 19 by countersunk screws 20. Neither the shaft nor the sleeve extend to the bottom of the chamber. The sleeve is provided on its outer side with a plurality of radial and slightly inclined vanes or blades 2!, each forming a fragment of a high-pitch thread formed around the sleeve and extending to the bottom of the chamber. The blade portions extending below the sleeve bottom are cut away outwardly and downwardly at their inner edges 22. The inclination of each blade is such that the pressure exerted by the latter durin the clockwise (Figure 5) rotation has a vertically upward component forcing the liquid up the incline of the discharge passage.

The impeller shaft l8 extends through an upward conical extension 23 of the top plate I6 of the chamber. The flat bottom portion of the gasket has an eccentric aperture 24 for the passage of this extension in the lower portion of which is seated a brass bearing 25 for the shaft. The upper cylindrical sleeve part 2-6 of the extension is exteriorly threaded in a left-hand sense for engagement with an interiorly threaded pipe coupling 21 which is also threaded upon the lower' exteriorly threaded portion of a sleeve 23. The upper portion of this last named sleeve is threaded into the coupling 29 which has an interior left-hand thread. The upper end of sleeve 28 supports within the coupling 29 a washer 39 surrounding the shaft and engaged by the lower end of a coil spring 3-1 encircling the shaft. The coil spring supports at its upper end and within the coupling 29 another washer 32 which in turn supports a collar 33. The latter is intended to have a slight sliding axial motion on the shaft and to rotate with the latter. The collar which fits on the shaft and forms a water seal has in its central opening and adjacent its bottom a radial recess 34 which has been brought into registry with a recess 35 in the shaft portion surrounded by the collar. A key 36 is lodged in both recesses and is of an axial length less than the corresponding length of the recesses so that the collar can have the axial sliding motion described and rotate with the shaft. The upper end portion of the collar 33 has a conical recess 31 for receiving the lower conical end portion of an upper brass collar 38 surrounding the shaft and threaded with a left-hand thread in the coupling 29. The spring described holds the lower collar against the upper collar, sealing oil sand and water from coming up the main shaft and also holds the oil in the shaft supporter.

Into the upper left-hand threaded end portion of the coupling 29 is threaded the lower end of a pipe 39 extending upwardly and having its upper end threaded into a coupling 40 with an interior left-hand thread which is also screwed around the lower end portion of a tubular supof the outlet member branches off at the left a spout 43 discharging the liquid pumped.

At the bottom of the cylindrical bearing part 42 of the tubular support I? is a double bearing 49 to balance the effect of the side pull caused by the belt on the pulley (both to be described) and supporting a washer 50. On the latter rests a single ball bearing 51 intended to carry the weight of the impeller and the shaft. This weight is transmitted to the bearing by a washer 52 supporting a flange ring 53 which is clamped by screws 54 on the shaft.

From the horizontally disposed plate 43 of the outlet member rises the vertical wall 55, forming an oil pan. The shaft surrounded by the structure so far described carries on its portion rising above the oil pan a pulley 56 keyed to the shaft and provided at the lower edge with a horizontally disposed flange 51.

If the lower end portion of the structure described is immersed in the position shown in a liquid the same will enter the impeller chamber and be forced up the inclined bottom of the outlet and above the chamber and finally flows out of the spout. The pressure of the water presses against the flange of the rubber gasket which acts as a seal.

The lower collar 33 rotating with the shaft functions as a seal against water and sand and its inner conical surface contacting the exterior 4 conical surface functions as a seal of the oil dripping down from the oil pan.

While the foregoing description of the preferred embodiment of my invention illustrated in the accompanying drawings discloses the structure in many details, the latter are intended to be merely examples or illustrations of my invention, not limitations or restrictions thereof. I therefore desire it to be understood that modifications or changes such as occur to those skilled in the art are not departures from the spirit and scope of the invention as defined in the appended claims.

What I claim and desire to secure by Letters Patent is:

1. In a pump including a vertical casing and a pump cylinder eccentrically located within the lower portion thereof and having a wall integrally formed therewith concentric with the easing and providing a discharge passage between the cylinder and said wall; said wall being provided with an upstanding peripheral flange at its upper end and resilient sealing means carried by the flange and projecting radially of the cylinder above the flange to bear against the inside of the casing.

2. In a pump including a vertical casing and a pump cylinder eccentrically located within the lower portion thereof and having a wall integrally formed therewith concentric with the casing and providing a discharge passage between the cylinder and said wall; said wall being provided with an upstanding peripheral flange at its upper end and resilient sealing means carried by the flange and projecting radially of the cylinder above the flange to bear against the inside of the casing, said sealing means being in the form of an annulus having its upper portion bearing against the inside of the casing and its lower portion forming a shirt for overlapped position at the inside of the flange.

3. In a pump including a vertical casing and a pump cylinder eccentrically located within the lower portion thereof and having a wall integrally formed therewith concentric with the casing and providing a discharge passage between the cylinder and said wall; said wall being provided with an upstanding peripheral flange at its upper end and resilient sealing means carried by the flange and projecting radially of the cylinder above the flange to bear against the inside of the casing, said sealing means being in the form of an annulus having a portion bearing against the inside of the casing and another portion disposed in overlapping position to the flange and at the inside thereof, and an expander at the inside of the flange for pressing the overlapping portion of the annulus snugly against the inside of the flange.

CLARENCE B. WADE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Nurnc-er Name Date 1,170,512 Chapman Feb. 8, 1916 1,178,206 Baker et al. Apr. 4, 1916 1,179,802 Chapman Apr. 18, 1916 1,768,130 Meaux June 24, 1930 2,037,607 Wade Apr. 14, 1936 2,247,325 Wagner June 24, 1941 2,385,105 Samelson Sept. 18, 1945 2,414,254 Busby Jan. 14, 1947 

